Question

Which one of the following amines have highest boiling point?

• A. Primary amine
• B. Secondary amine
• C. Tertiary amine
• D. All of the above

Answer 1

The correct option is A Primary amine

$1^{\circ }$ and $2^{\circ }$ amines are engaged in intermolecular hydrogen bonding between nitrogen of one and hydrogen ​of another molecule. The extent of Intermolecular H-bonding ​between nitrogen and hydrogen ​is more in $1^{\circ }$ amine since it ​has more number of H atoms. Hence, primary amine has the highest boiling point.